use regex to replace Apache libexec with Homebrew prefix

- keep conf folder of current apache installation
PHP 5.3.23 and 5.4.13
Updated HEAD to Github
add missing shebang to bin stub
Add formula for PhpDocumentor 2
Added ev (libev) extension for PHP 5.4
Upgrade php54-xhprof to the newest version
Timezonedb formula
Updated phalcon formulae
mysqlnd_ms 1.4.2 from PECL
phploc: 1.7.4 Measures size/analyzes PHP structure
pdepend: 1.1.0 Code analyzer and metrics generator
PHP CodeSniffer 1.4.5
Merge remote-tracking branch 'upstream/master' into mysqlnd_ms
Fixed bad class naming. Closes #532
Merge branch 'master' of https://github.com/josegonzalez/homebrew-php into mysqlnd_ms