* gjavah.c (main): Handle --output-class-directory argument.
* jvspec.c (lang_specific_driver): Translate `-d' into
-foutput-class-dir.
* jcf.h (jcf_write_base_directory): Declare.
* lang.c (lang_decode_option): Recognize -foutput-class-dir.
* lang-options.h: Mention -foutput-class-dir.
* jcf-write.c (jcf_write_base_directory): New global.
(make_class_file_name): Put generated .class file into `-d'
directory, or into source directory if -d not given. Function now
static.
(write_classfile): Free class file name. Handle case where class
file name is NULL.
(DIR_SEPARATOR): New macro.
Include <sys/stat.h>