Ports: Tweak configuration flags of gcc port to support shared binaries

Ports/gcc/package.sh

@@ -2,7 +2,7 @@
 port=gcc
 version=10.2.0
 useconfigure=true
-configopts="--target=i686-pc-serenity --with-sysroot=/ --with-build-sysroot=$SERENITY_ROOT/Build/Root --with-newlib --enable-languages=c,c++ --disable-lto --disable-nls"
+configopts="--target=i686-pc-serenity --with-sysroot=/ --with-build-sysroot=$SERENITY_ROOT/Build/Root --with-newlib --enable-languages=c,c++ --disable-lto --disable-nls --enable-shared --enable-default-pie --enable-host-shared"
 files="https://ftp.gnu.org/gnu/gcc/gcc-${version}/gcc-${version}.tar.xz gcc-${version}.tar.xz
 https://ftp.gnu.org/gnu/gcc/gcc-${version}/gcc-${version}.tar.xz.sig gcc-${version}.tar.xz.sig
 https://ftp.gnu.org/gnu/gnu-keyring.gpg gnu-keyring.gpg"