a lot of bugfixes

is_file: ArgumentException if path contains invalid chars
invalid encoding in urlencode/urldecode and dependenced functions
some ScriptContext survived if web.config contains handlers or async
code used (directly or indirectly)
ReferenceNull is error instead of warning
User error handler called when error reporting is disabled
wrong print_r output of the PhpBytes type
curl: support for CURLOPT_SSL_VERIFYPEER and CURLOPT_SSL_VERIFYHOST in
.net 4.5
curl_setopt: bug with int values
gd: imagecolorresolve, imagecolorsforindex implementation
gd: transparent gif color changed to black when load and save image
soap: many bugfixes and simple SoapServer implementation
xml_parse_into_struct: wrong result and bug with encoding
gzcompress NullReferenceException when data is null