Use the pull request repo, branch and commit

srb2win-jameds:appveyor-exename-b1d931d47.exe
(cherry picked from commit ef2febe1e01bc7c93f30d2063bfd754b1a79dd3a)

appveyor.yml

@@ -83,9 +83,12 @@ before_build:
 - ccache -V
 - ccache -s
 - if [%NOUPX%] == [1] ( set "NOUPX=NOUPX=1" ) else ( set "NOUPX=" )
-- cmd: git rev-parse --short %APPVEYOR_REPO_COMMIT%>%TMP%/gitshort.txt
+- if defined [%APPVEYOR_PULL_REQUEST_HEAD_COMMIT%] ( set "COMMIT=%APPVEYOR_PULL_REQUEST_HEAD_COMMIT%" ) else ( set "COMMIT=%APPVEYOR_REPO_COMMIT%" )
+- cmd: git rev-parse --short %COMMIT%>%TMP%/gitshort.txt
 - cmd: set /P GITSHORT=<%TMP%/gitshort.txt
-- set "EXENAME=EXENAME=srb2win-%APPVEYOR_REPO_BRANCH%-%GITSHORT%.exe"
+# for pull requests, take the owner's name only, if this isn't the same repo of course
+- if [%APPVEYOR_PULL_REQUEST_HEAD_REPO_NAME%] == [%APPVEYOR_REPO_NAME%] ( set "REPO=%APPVEYOR_REPO_BRANCH" ) else ( for /f "delims=/" %%a in ("%APPVEYOR_PULL_REQUEST_HEAD_REPO_NAME%") do set "REPO=%%a:%APPVEYOR_PULL_REQUEST_HEAD_REPO_BRANCH" )
+- set "EXENAME=EXENAME=srb2win-%REPO%-%GITSHORT%.exe"
 - set "SRB2_MFLAGS=-C src WARNINGMODE=1 CCACHE=1 NOOBJDUMP=1 %NOUPX% %EXENAME%"
 - if [%X86_64%] == [1] ( set "MINGW_FLAGS=MINGW64=1 X86_64=1 GCC81=1" ) else ( set "MINGW_FLAGS=MINGW=1 GCC91=1" )
 - set "SRB2_MFLAGS=%SRB2_MFLAGS% %MINGW_FLAGS% %CONFIGURATION%=1"