This solves the problem of creating and installing parse/t/lib.so as
/usr/lib/x86_64-linux-gnu/t.0.9.6.
Fix a round of typos and incorrect man macros.
 The macro Em. was present in all the manpages and it's incorrect, plus
 there's some typos here and there, some of them spotted by lintian.
Properly propagate LDFLAGS in libraries.
 Debian fills up LDFLAGS with hardening flgs but for some libraries this
 parameter is not additive to the value from the environment but hardcoded.
Add .so as a suffix for libtcc on Linux, even when it's not being
installed.