[gobject-introspection] detectenv_msvc.mak: Add MSVC 2008 x64-specific CFLAG

[Chun-wei Fan <fanchunwei src gnome org>]

commit 7b6e421ad71bfe5e2e8b8e92ef97f42b77e79ba3
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Fri Jul 4 12:03:34 2014 +0800

    detectenv_msvc.mak: Add MSVC 2008 x64-specific CFLAG
    
    Due to an optimization bug in the Visual Studio 2008 x64 compiler/linker,
    compilation of some programs shipped with g-i will hang, so use different
    optimization settings for it, so that programs built through the NMake
    Makefiles can build correctly.  A similar setting for the g-ir-compiler
    is already in there.

 build/detectenv_msvc.mak |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/build/detectenv_msvc.mak b/build/detectenv_msvc.mak
index 3e3dcdf..d4b9b84 100644
--- a/build/detectenv_msvc.mak
+++ b/build/detectenv_msvc.mak
@@ -53,7 +53,11 @@ VALID_CFGSET = TRUE
 !endif
 
 !if "$(CFG)" == "release"
+!if "$(VSVER)" == "9" && "$(PLAT)" == "x64"
+CFLAGS_ADD = /MD /O1 /Oi
+!else
 CFLAGS_ADD = /MD /O2
+!endif
 !else
 CFLAGS_ADD = /MDd /Od /Zi /DG_ENABLE_DEBUG
 !endif