Replacing build folder.
[v23] Replacing 'config' folder.
[v23] Updating 'js' folder.
[v23] Updating 'mfbt' folder.
[v23] Updating 'python' folder.
[v23] Updating 'testing' folder.
[v23] Patch for configure.in, aclocal.m4, ios.m4, vm/NumericConversions.h.
[v23] Patch for AsmJS.h.
[v23] Patch for configure file.
[v23] Disabling init-api since that wasn't supported on Android and iOS. Also, the icu library will is too large to be included in spidermonkey. For instance, on win32, the  size of the dynamic library 'mozjs.dll' will grow to 12M while 3M in v22.
Merge pull request #21 from dumganhar/v23

Upgrading SpiderMonkey to FireFox v23.