 FIX
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 ** in txt2html etc.

 Have malloc_check_ptr() calls in assert_valid() somehow, Ustrp is a problem

 Allow the shared lib. to compile without inline.

 ADD
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 DOCS!
  finish ref. documentation.
  tutorial, hello world to mkdir_p to netstr?

 scons build?

 ustr-import man page.

 ustr_pool_subpool_take() => move a pointer from a pool to a subpool

 ustr_poolsi_setf_realloc() => toggle calling of realloc on/off
 ustr_poolsi_setf_free_num() => Number of ptr's to compare on free
  These two allow a zero free policy, except on clear/free.

 ustr_cmp_prefix*_subustr()
 ustr_cmp_suffix*_subustr()

 ustr_sc_reconfig()
   Change sized?
   Change rbytes
   Change exact?

 ustr_srch_case()

 ustr_parse_netstr() / ustr_parse_netstr2()

 ustr_fmttime == strftime()

 chomp/strip

 ljust
 rjust
 center
 zfill?

 ustr_to_uint() => like ustr_parse_uint() but no error checking etc.
   Ie. the aotl() of strtol()
   This allos attribute pure to be used, so it'll be hoisted from loops etc.
