(info, html): Implement.

(all): Depend on info.

Flatten info directory.  This undoes the move to one subdirectory per
chapter, which was done during Empire 2.  The structure doesn't buy us
much, as the info name space is flat, and it complicates makefiles.

Overhaul info.pl:
- It now wants to run in the root of the build tree.
- Information on source files and subjects is now stored in makefiles,
  thus info.pl no longer picks up random junk from the file system.
- Clean up Perl anachronisms, in particular use subroutine arguments and
  results rather than global variables where convenient.
- Change format of diagnostics to the common format used by GNU tools,
  so that Emacs and the like can parse it.
- Catch missing .SA.
- When creating a new subject file, cowardly refuse to overwrite an
  existing file.
- Subject files contain topics sorted by chapter, then by name.  The
  order of chapters used to depend on how Perl sorts hash keys.  Fix
  it.

info/dump.t

@@ -0,0 +1,124 @@
+.TH Command DUMP
+.NA dump "Dump raw sector information"
+.LV Expert
+.SY "dump <SECTS> [<fields>]"
+The dump command displays all information on
+some or all of the sectors you occupy. 
+dump is a combination of census, commodity, cutoff and level.
+Each sector's information is printed on one very long line.
+Fields are separated by a single space.
+If no fields are specified, all fields are printed.
+.s1
+This command is designed to be used for input to an empire tool
+such as \*Qve\*U.
+.s1
+In the syntax of the dump command
+<SECTS> is the area on which you wish information,
+[<fields>] are the fields you wish to dump.
+If no fields are specified, all fields are printed.
+(see \*Qinfo Syntax\*U).
+.s1
+A dump command lists all selected sectors headed by:
+.NF
+Sun Feb  9 22:16:37 1997
+DUMP SECTOR 855544597
+<fields>
+.FI
+The first line is the date.  The second line is the
+"DUMP SECTOR <timestamp>" where the <timestamp> field is the current
+timestamp.  The third line is the columns which are output.
+.s1
+The following may be used as fields.  They must be entered EXACTLY as
+shown here (no partial pattern matching is done.)
+.s1
+.NF
+   des
+   sdes
+   eff
+   mob
+   *
+   off
+   min
+   gold
+   fert
+   ocontent
+   uran
+   work
+   avail
+   terr
+   civ
+   mil
+   uw
+   food
+   shell
+   gun
+   pet
+   iron
+   dust
+   bar
+   oil
+   lcm
+   hcm
+   rad
+   u_del
+   f_del
+   s_del
+   g_del
+   p_del
+   i_del
+   b_del
+   o_del
+   l_del
+   h_del
+   r_del
+   u_cut
+   f_cut
+   s_cut
+   g_cut
+   p_cut
+   i_cut
+   d_cut
+   b_cut
+   o_cut
+   l_cut
+   h_cut
+   r_cut
+   dist_x
+   dist_y
+   c_dist
+   m_dist
+   u_dist
+   f_dist
+   s_dist
+   g_dist
+   p_dist
+   i_dist
+   d_dist
+   b_dist
+   o_dist
+   l_dist
+   h_dist
+   r_dist
+   road
+   rail
+   defense
+   fallout
+   coast
+   c_del
+   m_del
+   c_cut
+   m_cut
+   terr1
+   terr2
+   terr3
+.FI
+.s1
+A typical usage might be:
+.EX dump #5
+which would list data for all sectors in realm #5.
+.s1
+A dump lists each of your sectors in the specified area.
+The header line is a list of fields that correspond
+to the order that dump prints the sector info.
+.s1
+.SA "census, commodity, cutoff, level, Clients, Sectors"