add simple man page for bit2fp and fp2bit

bit2fp.1

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+.\" Process this file with
+.\" groff -man -Tascii bit2fp.1
+
+.TH FPGATOOLS: "1" "September 2012"
+
+.SH NAME
+bit2fp \- bitstream to floorplan
+
+.SH SYNOPSIS
+.B bit2fp
+.RB [--bit-header]
+.RB [--bit-regs]
+.RB [--no-model]
+.RB [--no-fp-header]
+.RB [--dump-routing-mips]
+.RB <bitstream_file>
+
+.SH AUTHORS
+Wolfgang Spraul
+
+.PP
+This is free and unencumbered software released into the public domain.
+for details see the UNLICENSE file at the root of the source tree.

fp2bit.1

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+.\" Process this file with
+.\" groff -man -Tascii bit2fp.1
+
+.TH FPGATOOLS: "1" "September 2012"
+
+.SH NAME
+fp2bit \- floorplan to bitstream
+
+.SH SYNOPSIS
+.B fp2bit
+.RB <floorplan_file|- for stdin>
+.RB <bits_file>
+
+.SH AUTHORS
+Wolfgang Spraul
+
+.PP
+This is free and unencumbered software released into the public domain.
+for details see the UNLICENSE file at the root of the source tree.

fpgatools.1

@@ -1,6 +0,0 @@
-.TH FPGATOOLS: "1" "August 2012"
-.SH NAME
-fpgatools
-.PP
-This manual page was written by Xiangfu Liu <xiangfu@openmobilefree.net>
-It is licensed under the terms of the GNU GPL (version 2 or later).