added an update_color, updated edit_add, i18ned a string and changed some getopt handlers in main to mallocstrcpy


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@1203 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

- Added syntax command to .nanorc file, to allow multiple syntaxes.  New function color.c:update_color(), calls in various files.c places, syntaxtype struct, global variables syntaxes, syntaxfile_regexp and synfilematches


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- General: - Change from read() and write() to file streams by Jay Carlson. Allows OS to implement read and write ahead rather than making us do it.  Hopefully merged properly


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- General: - Preliminary prepend code.  This may be a bad idea, but I've been wanting it for awhile now and we'll see how bad it messes everything up.  Changes to files.c:do_writeout(), write_file()


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- Change to openfilestruct for multibuffer mode by DLR. New functions nano.c:make_new_opennode(), free_openfilestruct(), delete_opennode(), unlink_opennode(), splice_opennode(), new struct openfilestruct in nano.h


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Get rid of stupid uninitialized warnings and move nano_dos_msg and nano_mac_msg into NANO_SMALL check


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 - Many malloc() cleanups and files.c tweaks by Steven Kneizys, new functions utils.c:free_shortcutage() (got to love that name\!) & free_toggles(), and big cleanup program thanks_for_all_the_fish() (originally thanks_for_the_memories()).  Mods to shortcut_init() by Chris


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files.c:add_open_file() - Get rid of unsetting MARK_ISSET because otherwise writing marked text will automatically unset the marker with multibuffer enabled


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Changed header comments to say "version 2" instead of "version 1" as the COPYING file is actually version 2 of the GPL (bug noticed by Jordi Mallach)


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Fixed null_at to ACTUALLY DO SOMETHING with its arg.  Again, this was causing nasty errors if the call to nrealloc moved where the data was located


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Initialize totsize in files.c:new_file() and let do_gotopos keep current position when invoking the alternate speller (DLR)


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- files.c: do_writeout() - Expanded strings to not use %s and ?: to determine write/append string to be nice to translators


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Code to read/write dos formatted files.  Massive amounts of new code in read_line and write_file.  New flag DOS_FILE


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General: - New flag -o, --operatingdir, similar to Pico's -o mode.  New function check_operating_dir(), changes to load_file (arg), open_file_dup_search (arg), new function do_gotopos for -F.


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