added support for accessing array keys by other value objects, support for unsetting array members, support for array_key_exists(), isset() and unset() functions (feature request in from issue #71)
added unset function (request from issue #71)
added array_push function
Merge branch 'master' of https://github.com/CopernicaMarketingSoftware/PHP-CPP
fixed compile issues with gcc 4.7 (see issue #72)
generate warning when a function is called with not enough parameters
Merge branch 'master' into ini
Conflicts:
	include/namespace.h
fix warnings
g++ -Wall -c -O2 -std=c++11 -fpic -I"/home/valmat/work/PHP-CPP/tests/include/lib" -I"/home/valmat/work/PHP-CPP/tests/include/zts" -o main.o main.cpp
In file included from /home/valmat/work/PHP-CPP/tests/include/lib/phpcpp.h:60:0,
                 from main.cpp:8:
/home/valmat/work/PHP-CPP/tests/include/lib/phpcpp/call.h:70:28: warning: extra tokens at end of #pragma directive [enabled by default]
 #pragma push_macro("isset");
                            ^
/home/valmat/work/PHP-CPP/tests/include/lib/phpcpp/call.h:84:27: warning: extra tokens at end of #pragma directive [enabled by default]
 #pragma pop_macro("isset");
                           ^