fbc 1.06.0 pre-release package build updates

[jayrm]

These changes are leading up to next 1.06.0 release. This is my first iteration of working through the release process in many years. Building and testing packages only.

These updates allow building release packages for the following targets(hosts, toolchain):

• linux-x86 (TinyCore9, i686, binutils 2.29.1, gcc 7.2.0)
• linux-x86 (ubuntu 14.04, i686, binutils 2.24, gcc 4.8.4)
• linux-x86 (slackware 14.2, i686, gcc 5.3.0)
• linux-x86_64 (ubuntu 14.04, x86_64, binutils 2.24, gcc 4.8.4)
• linux-x86_64 (slackware 14.2, x86_64, gcc 5.3.0)
• win32-mingworg (mingw, MINGW32_NT-6.1, mingw, binutils 2.25.1, gcc 4.8.1)
• win32-mingworg (winxp, mingw, i686, binutils 2.25.1, gcc 4.8.1)
• win32 (mingw-w64, MSYS_NT-6.1-WOW, i686, binutils 2.25.1, gcc 5.2.0)
• win64 (mingw-w64, MSYS_NT-6.1, x86_64, binutils 2.25.1, gcc 5.2.0)
• dos (winxp, djgpp, binutils 2.29, gcc 7.1.0)

For each target/host, the binary package was used to build the source package, then using the newly built compiler to build the test suite. Generally, the 1.06.0 release is a 1.05.0 release with an updated compiler and run-time. Next release after this one should have binding updates and tool chain updates. Manifests will be updated in a separate pull request after reviewing package contents.

Changes for this pull request are summarized as follows:

makefile

• avoid use of long command lines, msys2 & mingw-w64 ultimately call CreateProcess to execute commands. Some makefile commands are too long for this. mingw-org handles long command lines by writing options to temp files automatically.
• use ./src/compiler/obj/ for object files. For me it makes building multiple standalone versions a little faster

build release script: ./contrib/release/build.sh

• updated dos release with pthread & socket library
• updated dos release with patch for pthread header
• updated dos release with dxe3gen.exe
• updated download link for dx80_mgw.zip
• updated download link for GoRC.zip
• after build libffi, cache the needed files for target/version to avoid a rebuild later

fbhelp

• now tested on linux, though use of extended ascii chars will still look weird depending on configuration of terminal code page.

fbc-tests: ./tests/unit-tests.mk ./tests/log-tests.mk

• avoid use of long command lines to allow building using mingw-w64 tools chains, shell, etc, on windows. Delegate to xargs to manage the length of command lines. Or write to to temp files as needed.
• test suite should fully pass on DOS, ( though not all tests enabled )

fbdoc

• wiki snap shots, multiple dates
• example updates (checked that wiki examples compile)
• copyright updates

[jayrm]

I'm merging this change in to fbc/master. These are the changes I need to get the next release out. A separate pull request will be coming for the updated manifests and any other tweaks needed for the next release.

[countingpine]

Great work! Sorry for the lack of feedback.
I've just tested build.sh in MSYS on Windows 7 32-bit. Once I'd installed/pathed all the dependencies (Git, Curl 7-zip, NSIS; mingw-developer-toolkit, mingw-{un,}zip), it worked without any apparent errors and built all the necessary packages.