hpftodit has been extended to handle TrueType metric files and

hpftodit has been extended to handle TrueType metric files and
more glyphs.  See hpftodit.man for more details.

* src/utils/hpftodit/hpftodit.cpp: Include stdio.h, string.h,
ctype.h, and unicode.h.
s/msl/charcode/ everywhere since we now handle Unicode values also.
(equal, NO, YES, MSL, SYMSET, UNICODE, UNICODE): New macros.
Use it where appropriate.
(MULTIPLIER): Replaced with...
(multiplier): New global static variable.
(scale): Updated.
(tag_type): Add more TFM tags.
(tag_name): New array.
(ENUM_TYPE, FLOAT_TYPE): Removed.
(BYTE_TYPE): New value assigned.
(ASCII_TYPE, RATIONAL_TYPE): New enumeration values.
(text_symbol_sets, special_symbol_sets): Extended to cover more
sets.
(check_type): Add return value.
(check_units): Add parameters to get ppi and upem values.
Handle TrueType TFM data.
(output_font_name): New function.
(output_charset): Add parameter to handle TFM type.
Handle TrueType TFMs also.
(em_fract): New macro.
(dump_tags): Be much more verbose and handle more tags.
(dump_ascii, dump_symbol_sets, dump_symbols): New functions.
(hp_msl_to_ucode_name, unicode_to_ucode_name, is_uname): New
functions.
(read_map): Add parameter to handle TFM type.
Handle both MSL and Unicode mappings.
(main): Add two new command line options `-a' and `-q'.
Updated to make use of new functions.
(usage): Updated.

* src/utils/hpftodit/hpuni.cpp: New file.

* src/utils/hpftodit/Makefile.sub, src/utils/hpftodit/hpftodit.man:
Updated.

* src/include/nonposix.h (read) [_MSC_VER]: Define.