Upgrade php55-pthreads to 0.0.44

Hi,

I just trying to setup my env with php55 and the pthreads module is failing:
"/private/tmp/php55-pthreads-XrRI/pthreads-0.0.42/src/prepare.c:498:9: error: no member named 'function' in 'struct _zend_trait_alias'
                copy->function = alias->function;
                ~~~~  ^
/private/tmp/php55-pthreads-XrRI/pthreads-0.0.42/src/prepare.c:498:27: error: no member named 'function' in 'struct _zend_trait_alias'
                copy->function = alias->function;
                                 ~~~~~  ^
/private/tmp/php55-pthreads-XrRI/pthreads-0.0.42/src/prepare.c:521:9: error: no member named 'function' in 'struct _zend_trait_precedence'
                copy->function = precedence->function;
                ~~~~  ^
/private/tmp/php55-pthreads-XrRI/pthreads-0.0.42/src/prepare.c:521:32: error: no member named 'function' in 'struct _zend_trait_precedence'
                copy->function = precedence->function;
"

This looks solved in the last stable version 0.0.42.

Regards and thanks for you excelent job