It is no longer necessary to assign up() and down() separately for
the help viewer because by now the movement keys have been sorted
in order of ascending stride also in the main menu.

The two string definitions are relocated just to reduce the number
of #ifdefs.

Also, change two error messages a bit.

All this "not is no" has me turning around in circles
at least ten times before I know which side is which.

This fixes https://savannah.gnu.org/bugs/?51061

Reported-by: Vicente Olivert Riera <vincent.riera@imgtec.com>

Also fix a URL that mistaken points to a specific bug.

Apparently the curses on SunOS is less forgiving than the one on GNU.
Or rather: delwin(NULL) should just return an error, it shouldn't crash.

This fixes https://savannah.gnu.org/bugs/?51053

.
Reported-by: John Wiersba <jrw32982@yahoo.com>
Solved-by: John Wiersba <jrw32982@yahoo.com>

Most of the keywords listed on the following URL are now highlighted:
  http://php.net/manual/en/reserved.keywords.php

Also color single-quoted strings, and require that //-type comments
are preceded by whitespace or are alone on a line.

With-feedback-from: M <taur@mail.com>

This fixes https://savannah.gnu.org/bugs/?50972

.
Reported-by: John Wiersba <jrw32982@yahoo.com>

It's useless, because the position doesn't get restored, and it
cannot be restored because the name is different every time.

This extra question was included upon Chris' request, but I find it
confusing and angering.

(And in the bargain sort or group some of the keywords.)

This addresses https://savannah.gnu.org/patch/?9342

.
Suggested-by: M <taur@mail.com>

When spotlighting the string to be replaced, placewewant isn't valid,
so tell place_the_cursor() to ignore its value to avoid the cursor
getting mistakenly placed at the beginning of the next row.

This fixes https://savannah.gnu.org/bugs/?50997

.
Reported-by: David Lawrence Ramsey <pooka109@gmail.com>

When the column given in gotoline() is beyond the last available
column in the row of the last chunk, then set placewewant to the
actual end of the chunk, to prevent surprising jumps to the left
when moving up or down from there.

This fixes https://savannah.gnu.org/bugs/?50995.

Whenever 'make' is run, it should check whether the revision has
changed, and if so, it should update src/revision.h.

This portable FORCE mechanism should have been the replacement for
the phony target that was removed in a33a4f00, five commits ago.

This fixes https://savannah.gnu.org/bugs/?50956 in a better way.

Also, allow rebinding the word and block jumping functions
in the tiny version when nanorc files are reenabled.

(This should have been part of 9ea5eef2, four commits ago.)

Also, allow Ctrl+Left/Right with --enable-tiny --enable-browser.

This fixes https://savannah.gnu.org/bugs/?50956

.
Reported-by: John Wiersba <jrw32982@yahoo.com>

Also remove a superfluous check for 'do_replace' -- it never gets
bound in the Search/Replace menus.

When configured with --enable-tiny --enable-multibuffer,
/do/ include the new-buffer toggle in the Read-File menu.

Some .rdf files are XML, but the .rdf extension seems to be used
also for other things.  So... use the 'header' mechanism.

(Hadn't seen that one because of my additional bindings.)

Add missing spaces, remove excess spaces, and
replace groups of indentation spaces with tabs.

When not in a UTF-8 locale, each character is just a single byte.