Fix NET incompatibility
tabs
Set async block flag also for partial methods
Don't disable sharing for open generic async methods, since the JIT can't compile these without sharing.
[Mono.Debugger.Soft] Throw AbsentInformationException, not ArgumentException which makes no sense
[Mono.Debugger.Soft] fixed the build
Merge pull request #606 from sesef/master

Fix .NET incompatibility in UpDownBase
[sgen] Binary protocol entry for user-forced GCs.
[sgen] Cmdline option to print all entries in sgen-grep-binprot.
[sgen] Mod-union consistency check MONO_GC_DEBUG option.
[sgen] Update mod-union with regular, not shadow cardtable.
[sgen] Mark major->major references in unmanaged wbarrier, too.
[sgen] Fix binary protocol concurrent crashes.
Merge remote-tracking branch 'origin/fix-concurrent-wbarrier'