Improve README.md for windows.

20 jobs for feature/use_multi_listener_api_only in 14 minutes and 31 seconds (queued for 3 seconds)
latest
Status Job ID Name Coverage
  Build
passed #89064
docker-archlinux-latest
job-archlinux-latest-ninja-clang

00:03:15

passed #89063
docker-archlinux-latest
job-archlinux-latest-ninja-gcc

00:02:50

failed #89849
docker-centos7
job-centos7-makefile-clang

00:05:44

failed #89848
docker-centos7
job-centos7-makefile-gcc

00:02:50

failed #89851
docker-debian8
job-debian8-makefile-clang

00:01:28

failed #89850
docker-debian8
job-debian8-makefile-gcc

00:01:58

passed #89070
docker-debian9
job-debian9-ninja-clang

00:03:13

passed #89069
docker-debian9
job-debian9-ninja-gcc

00:03:01

passed #89073
macosx
job-macosx-ninja

00:08:33

passed #89072
docker-ubuntu-rolling
job-ubuntu-rolling-ninja-clang

00:02:51

passed #89071
docker-ubuntu-rolling
job-ubuntu-rolling-ninja-gcc

00:03:38

failed #89852
windows
job-windows-vs2015

00:05:53

failed #89066
docker-centos7
job-centos7-makefile-clang

00:03:59

failed #89065
docker-centos7
job-centos7-makefile-gcc

00:06:54

failed #89068
docker-debian8
job-debian8-makefile-clang

00:02:54

failed #89067
docker-debian8
job-debian8-makefile-gcc

00:03:24

failed #89074
windows
job-windows-vs2015

00:06:21

 
  Package
skipped #89075
docker-centos7
job-centos7-rpm
 
  Deploy
skipped #89076
deploy
job-macosx-deploy
skipped #89077
deploy
job-windows-deploy
 
Name Stage Failure
failed
job-windows-vs2015 Build
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Microsoft.CppCommon.targets(133,5): error MSB3073: if %errorlevel% neq 0 goto :cmEnd [C:\GitLab-Runner\builds\651dcee5\0\BC\public\linphone-desktop\WORK\desktop\Build\xerces\install.vcxproj] [C:\GitLab-Runner\builds\651dcee5\0\BC\public\linphone-desktop\WORK\desktop\cmake\EP_xerces.vcxproj]
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Microsoft.CppCommon.targets(133,5): error MSB3073: :cmEnd [C:\GitLab-Runner\builds\651dcee5\0\BC\public\linphone-desktop\WORK\desktop\Build\xerces\install.vcxproj] [C:\GitLab-Runner\builds\651dcee5\0\BC\public\linphone-desktop\WORK\desktop\cmake\EP_xerces.vcxproj]
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Microsoft.CppCommon.targets(133,5): error MSB3073: endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone [C:\GitLab-Runner\builds\651dcee5\0\BC\public\linphone-desktop\WORK\desktop\Build\xerces\install.vcxproj] [C:\GitLab-Runner\builds\651dcee5\0\BC\public\linphone-desktop\WORK\desktop\cmake\EP_xerces.vcxproj]
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Microsoft.CppCommon.targets(133,5): error MSB3073: :cmErrorLevel [C:\GitLab-Runner\builds\651dcee5\0\BC\public\linphone-desktop\WORK\desktop\Build\xerces\install.vcxproj] [C:\GitLab-Runner\builds\651dcee5\0\BC\public\linphone-desktop\WORK\desktop\cmake\EP_xerces.vcxproj]
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Microsoft.CppCommon.targets(133,5): error MSB3073: exit /b %1 [C:\GitLab-Runner\builds\651dcee5\0\BC\public\linphone-desktop\WORK\desktop\Build\xerces\install.vcxproj] [C:\GitLab-Runner\builds\651dcee5\0\BC\public\linphone-desktop\WORK\desktop\cmake\EP_xerces.vcxproj]
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Microsoft.CppCommon.targets(133,5): error MSB3073: :cmDone [C:\GitLab-Runner\builds\651dcee5\0\BC\public\linphone-desktop\WORK\desktop\Build\xerces\install.vcxproj] [C:\GitLab-Runner\builds\651dcee5\0\BC\public\linphone-desktop\WORK\desktop\cmake\EP_xerces.vcxproj]
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Microsoft.CppCommon.targets(133,5): error MSB3073: if %errorlevel% neq 0 goto :VCEnd [C:\GitLab-Runner\builds\651dcee5\0\BC\public\linphone-desktop\WORK\desktop\Build\xerces\install.vcxproj] [C:\GitLab-Runner\builds\651dcee5\0\BC\public\linphone-desktop\WORK\desktop\cmake\EP_xerces.vcxproj]
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Microsoft.CppCommon.targets(133,5): error MSB3073: :VCEnd" s'est arr�t�e avec le code 1. [C:\GitLab-Runner\builds\651dcee5\0\BC\public\linphone-desktop\WORK\desktop\Build\xerces\install.vcxproj] [C:\GitLab-Runner\builds\651dcee5\0\BC\public\linphone-desktop\WORK\desktop\cmake\EP_xerces.vcxproj]
ERROR: Job failed: exit status 1
failed
job-centos7-makefile-clang Build
preprocessor error                   222
bad compiler arguments 17
unsupported compiler option 1962
no input file 136
cleanups performed 0
files in cache 9589
cache size 322.2 MB
max cache size 2.0 GB
ERROR: Job failed: exit code 1
failed
job-debian8-makefile-clang Build
compile failed                       155
preprocessor error 1848
bad compiler arguments 154
unsupported compiler option 16895
no input file 1232
files in cache 33447
cache size 143.8 Mbytes
max cache size 1.0 Gbytes
ERROR: Job failed: exit code 1
failed
job-centos7-makefile-gcc Build
compile failed                        17
preprocessor error 259
unsupported compiler option 1962
no input file 85
cleanups performed 0
files in cache 8611
cache size 164.8 MB
max cache size 2.0 GB
ERROR: Job failed: exit code 1
failed
job-debian8-makefile-gcc Build
called for preprocessing            4466
compile failed 154
preprocessor error 2159
unsupported compiler option 16895
no input file 770
files in cache 32874
cache size 144.2 Mbytes
max cache size 1.0 Gbytes
ERROR: Job failed: exit code 1