Merge pull request #184 from chadrien/master

Removed abstract ExtensionInterface::disabled as it's been moved to bash
strict version compare for CXX patch (5.2 < x < 5.4)
Checking in changes prior to tagging of version 1.13.0.
locking pearx version to 1.3.x
Fix curl install option
Merge pull request #198 from GM-Alex/fix-curl-option

Fix curl install option
Fix error on compiling php version 5.2
Merge pull request #199 from GM-Alex/fix-php5.2

Fix error on compiling php version 5.2
Added "off" and "switch-off" to commands list - refs #197