Update Compiler.php

Add feature "Check require extensions orther when build your extension"
Update Config.php

Add info "require extension" to init config.json
Update Compiler.php
Update .travis.yml
Update Compiler.php
Update Compiler.php
Update Compiler.php
Update Compiler.php
Update Compiler.php
Update .travis.yml
Report unused variables
Removing false positives when warning whenever a variable is unused aside from its declaration
Fixing false positives when warning unused variables, fixing anonymous variables
Fixing false positives when warning unused variables (2)
Passing non-variable value to export symbol assignment produce compilation error
Initial attempt to implement windows building using phpize
Add VS9 steps for PHP5.3 and PHP5.4
[TDD] Added excepton test - throw variable
Fix critical bug with unexpected slash
Refactoring to Utils::escapeClassName