Merge pull request #93 from younghz/master

Add to TcCounter
add TcMath::currencyText() function
Merge pull request #94 from XChinux/master

add TcMath::currencyText() function
add history
Merge pull request #95 from XChinux/master

add thanks
fix a tcmath bug
Merge pull request #96 from XChinux/master

fix a tcmath bug
fix TcMath::currencyText()'s error in Qt4
fix TcMath::currencyText()'s error
Merge pull request #97 from XChinux/master

fix TcMath::currencyText()'s error in Qt4
add msvc2012-x86-64 support
Merge pull request #98 from XChinux/master

add msvc2012-x86-64 support