Add path for fbclient.dll

Author: mlazdans

win_build_scripts/php-fb-build.bat

@@ -57,10 +57,15 @@ set pfb_build_root=php%pfb_php_vers%\%pfb_cpp_vers%\
 
 @REM check if ibase_connect() function exists in newly compiled extension
 set check_code="if(!function_exists('ibase_connect'))exit(1);"
+
+set TPATH=%PATH%
+set PATH=%PFB_FB64_DIR%;%TPATH%
 "%pfb_build_root%x64\php-src\x64\Release_TS\php.exe" -dextension=.\php_interbase.dll -r %check_code% || goto :error
 "%pfb_build_root%x64\php-src\x64\Release\php.exe" -dextension=.\php_interbase.dll -r %check_code% || goto :error
+set PATH=%PFB_FB32_DIR%;%TPATH%
 "%pfb_build_root%x86\php-src\Release_TS\php.exe" -dextension=.\php_interbase.dll -r %check_code% || goto :error
 "%pfb_build_root%x86\php-src\Release\php.exe" -dextension=.\php_interbase.dll -r %check_code% || goto :error
+set PATH=%TPATH%
 
 call :log "PHP %pfb_php_vers% build OK"