bug#10892: 24.0.93; doc of `icomplete-simple-completing-p' and `icomplete-with-completion-tables'

[Drew Adams]

I'm no expert on this, but both doc strings seem incorrect/incomplete.
 
`minibuffer-completion-table': The value of `t' is not mentioned, but it
is explicitly handled in the code.  The code will not do what the doc
says, if the value is `t'.
 
`icomplete-simple-completing-p': The doc string does not seem to
correspond to the code for the function.  This last part seems
incorrect:
 
"and `minibuffer-completion-table' is not a symbol (which would
 indicate some non-standard, non-simple completion mechanism,
 like file-name and other custom-func completions)."

In GNU Emacs 24.0.93.1 (i386-mingw-nt5.1.2600)
 of 2012-02-15 on MARVIN
Windowing system distributor `Microsoft Corp.', version 5.1.2600
Configured using:
 `configure --with-gcc (4.6) --no-opt --enable-checking --cflags
 -ID:/devel/emacs/libs/libXpm-3.5.8/include
 -ID:/devel/emacs/libs/libXpm-3.5.8/src
 -ID:/devel/emacs/libs/libpng-dev_1.4.3-1/include
 -ID:/devel/emacs/libs/zlib-dev_1.2.5-2/include
 -ID:/devel/emacs/libs/giflib-4.1.4-1/include
 -ID:/devel/emacs/libs/jpeg-6b-4/include
 -ID:/devel/emacs/libs/tiff-3.8.2-1/include
 -ID:/devel/emacs/libs/gnutls-3.0.9/include'