added missing "local" to declare n
fix indentation
engine: validate pre-conditions on extensions

extensions are matched by searching for the '.' char and thus must
start with this character.
Generate PDB for tundra debug builds.
Fix fully filtered-out ReplaceEnv would clear vars
Update doc/manual.asciidoc
Update doc/manual.asciidoc
Merge pull request #138 from mojavelinux/master

Fixed syntax errors in documentation
Merge pull request #137 from uucidl/F-CodeCleanup

A bit of code cleanup
Add support for VS2012.

Factored out common VS code into msvc-vscommon.lua
Fix Win32 64-bit bootstrap build error.
Some minor fixups so it builds on Mingw
Fixed unresolved symbol min when building under Mingw
Added some build flags for Mingw
Added win32-mingw to tundra's build file so Mingw can be used.
Merge pull request #141 from greatwolf/master

Fixups for  Issue #140 Mingw support
Fix spaces in TundraExePath when generating MSVC IDE projects
Merge pull request #148 from Drakonite/master

path fix for MSVC ide support