ncurses 5.7 - patch 20101023

ncurses 5.7 - patch 20101023

+ correct parsing of relative tab-stops in tabs program (report by
  Philip Ganchev).
+ adjust configure script so that "t" is not added to library suffix
  when weak-symbols are used, allowing the pthread configuration to
  more closely match the non-thread naming (report by Werner Fink).
+ modify configure check for tic program, used for fallbacks, to a
  warning if not found.  This makes it simpler to use additonal
  scripts to bootstrap the fallbacks code using tic from the build
  tree (report by Werner Fink).
+ fix several places in configure script using ${variable-value} form.
+ modify configure macro CF_LDFLAGS_STATIC to accommodate some loaders
  which do not support selectively linking against static libraries
  (report by John P. Hartmann)
+ fix an unescaped dash in man/tset.1 (report by Sven Joachim).