fpc: update to 3.0.4

@pullmoll enabled x86_64-musl with a hack. Needs testing.
Building for i686-musl currently segfaults for unknown reasons.

Closes: #10350 [via git-merge-pr]

srcpkgs/fpc/files/musl-__libc_csu.patch

@@ -0,0 +1,21 @@
+Hack to remove reference to the (glibc only) symbols __libc_csu_init
+and __libc_csu_fini. They are the libc initialize and finish function
+pointers. Not sure if this actually works, or if calling the pointers
+to be stored there before/after the call to PASCALMAIN is required.
+
+--- fpcsrc/rtl/linux/x86_64/cprt0.as	2015-12-16 16:28:03.000000000 +0100
++++ fpcsrc/rtl/linux/x86_64/cprt0.as	2018-01-02 14:41:08.598952141 +0100
+@@ -63,9 +63,10 @@
+ 	pushq %rsp
+ 
+ 	/* Pass address of our own entry points to .fini and .init.  */
+-	movq __libc_csu_init@GOTPCREL(%rip), %rcx
+-	movq __libc_csu_fini@GOTPCREL(%rip), %r8
+-
++/*	not availble in musl libc
++ *	movq __libc_csu_init@GOTPCREL(%rip), %rcx
++ *	movq __libc_csu_fini@GOTPCREL(%rip), %r8
++ */
+ 	movq main_stub@GOTPCREL(%rip), %rdi
+ 
+ 	/* Call the user's main function, and exit with its value.

srcpkgs/fpc/template

@@ -1,6 +1,6 @@
 # Template file for 'fpc'
 pkgname=fpc
-version=3.0.2
+version=3.0.4
 revision=1
 create_wrksrc=yes
 build_wrksrc="${pkgname}build-${version}"
@@ -11,19 +11,16 @@ short_desc="Free Pascal Compiler"
 maintainer="Leah Neukirchen <leah@vuxu.org>"
 license="GPL-2, LGPL-2.1, FPC-FPR"
 homepage="http://freepascal.org/"
-distfiles="http://gd.tuwien.ac.at/languages/pascal/${pkgname}/dist/${version}/source/${pkgname}build-${version}.tar.gz"
-checksum=f261ed0a361f190169fff428d65b707df1507df317fc0ed101b0e63596541b75
+distfiles="${SOURCEFORGE_SITE}/freepascal/Source/${version}/${pkgname}build-${version}.tar.gz"
+checksum=f66514e6f2c2e4e1bccccb4d554c24b77682ed61c87811ae5dd210f421855e76
 case "$XBPS_TARGET_MACHINE" in
-*-musl*)
-	broken="https://build.voidlinux.eu/builders/x86_64-musl_builder/builds/1375/steps/shell_3/logs/stdio"
-	;;
 x86_64*)
-	distfiles+=" http://gd.tuwien.ac.at/languages/pascal/${pkgname}/dist/${version}/x86_64-linux/${pkgname}-${version}-1.x86_64.rpm"
-	checksum+=" 85ad192927b2129022c27afbd6a6fc657a569ccfb43120e4868fea7812c10c52"
+	distfiles+=" ${SOURCEFORGE_SITE}/freepascal/Linux/${version}/${pkgname}-${version}-1.x86_64.rpm"
+	checksum+=" c7b75f09174a502d8dd776fbfabcad3e4360494fd635445185159b21001d65f1"
 	;;
-i686)
-	distfiles+=" http://gd.tuwien.ac.at/languages/pascal/${pkgname}/dist/${version}/i386-linux/${pkgname}-${version}-1.i686.rpm"
-	checksum+=" 0f049ff901305c315f90ec4c80fd3b054b97b1d8fca1552bcb036299aa64338f"
+i686*)
+	distfiles+=" ${SOURCEFORGE_SITE}/freepascal/Linux/${version}/${pkgname}-${version}-1.i686.rpm"
+	checksum+=" a8f1ea31c63e8cd96dbdecf02af97311f14629babe58b4bd18ecfa094a13ad45"
 	;;
 esac
 # TODO: figure out cross-build and how to unwrap the ARM .tar.
@@ -40,6 +37,7 @@ post_extract() {
 	case "$XBPS_TARGET_MACHINE" in
 	x86_64-musl)
 		sed -i s,/lib64/ld-linux-x86-64.so.2,/lib/ld-musl-x86_64.so.1, $build_wrksrc/fpcsrc/compiler/systems/t_linux.pas
+		cd $build_wrksrc && patch -p0 < ${FILESDIR}/musl-__libc_csu.patch
 		;;
 	i686-musl)
 		sed -i s,/lib/ld-linux.so.2,/lib/ld-musl-i386.so.1, $build_wrksrc/fpcsrc/compiler/systems/t_linux.pas