Remove all the generated autotools files

All these files are generated by autotools, and thus there is no need
to store them statically in the repository (where they will only pile
up, growing the size of the repository). Also, the mismatch between the
version of autotools on the host vs the ones used to generated the
current files in the repository causes troubles.

Instead, let users (or make dist) generate them all, using a simple
run of autoreconf.  Add them to .gitignore, so there is no risk to
commit them again.

Fixes: #25

Author: pinotree

.gitignore

@@ -0,0 +1,13 @@
+Makefile.in
+
+/aclocal.m4
+/compile
+/config.guess
+/config.sub
+/configure
+/depcomp
+/install-sh
+/ltmain.sh
+/m4/
+/missing
+/test-driver

INSTALL

@@ -2,6 +2,7 @@
 
 On systems with make, the installation process consists of:
 
+    autoreconf -fi
     ./configure
     make
     make check
@@ -13,9 +14,6 @@ linking your program to libcsv.
 This will install the csv.h header, libcsv shared and static libraries,
 and the csv(3) manual page.  Run ./configure --help for other options.
 
-If you receive an error about files being out of date or automake not installed
-when running make, run the fix-timestamps.sh script and try again.
-
 [Installing on systems without make]
 
 libcsv is written in pure ANSI C89 and does not have any prerequisites aside