Also, replaced #define _GNU_SOURCE (in config.h) with -D_GNU_SOURCE command-line parameter
because, for some reason g++ defines it implicitly and then complains about multiple definitions.
Also, removed -Winline from C(XX)FLAGS because it causes a lot of warnings for c++ code that
can't be easily removed and are not very significant.
All ERR()'s are renamed to NORM_ERR() and box to mbox so that they don't
clash with things in ncurses.h .
Ncurses is enabled by default when building conky but can be disabled with
--disable-ncurses .
At the moment configure doesn't check if ncurses is actually available.
I'm adding support for ncurses so that we can make as much things as possible
that are only available in X11 also available in console in the future.
In general, argument types should match, but for combined long and
double usage the long is being converted to double before evaluation.
A few examples:
${if_match ${cpu} < 30}
${if_match "asdf" != "qwer"}
${if_match 0.5 < 0.50001}
${if_match 49.999 < 50}
