minor errno fix
document errno behaviour
Improve rules for building examples.
Build and run the examples during the Travis build.
Remove unconditional -no-as-needed flag from ncurses build parameters.
Merge pull request #210 from yallop/travis-examples

Build and run the examples during the Travis build
Merge pull request #194 from fdopen/errno-fix

check_errno is not helpful
s/uint64/uint64_t/
Merge pull request #216 from yallop/uint64_t

s/uint64/uint64_t/
do not emit parameter name for functions taking no arguments
Merge pull request #217 from nobreach/master

do not emit parameter name for functions taking no arguments
Add an opam file to aid pinning.
Merge pull request #218 from yallop/opam-file

Add an opam file to aid pinning.
string_opt should wrap char *, not void *.
Merge pull request #219 from yallop/ptr-opt-reftyp

string_opt should wrap char *, not void *.