Fix MSVC inlining in C files by defining INLINE to be __forceinline.
Fix MSVC inlining in C files by defining INLINE to be __forceinline.

MSVC uses __inline as a hint to the linker, to expect multiple definitions 
of a symbol. It does NOT seem to take it as a hint to actually generate
inline code. Apparently it also fails to serve even as a good linker hint
when compiling C code.

__forceinline makes MSVC behave the way you wish __inline did. It also
appears to work in C as well as C++.

Review URL: http://codereview.chromium.org/385138

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@986 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

nacl-webkit/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client