Enable ELF .interp section on Hurd

The toolchain is basically the same as on Linux, so we can get the
program interpreter and print the build information when Qt5Core.so
is run.

Change-Id: I02a910e691622e24e882015716c5f74dd5a20c4a
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

src/corelib/global/global.pri

@@ -35,7 +35,7 @@ INCLUDEPATH += $$QT_BUILD_TREE/src/corelib/global
 # Only used on platforms with CONFIG += precompile_header
 PRECOMPILED_HEADER = global/qt_pch.h
 
-linux*:!cross_compile:!static:!*-armcc* {
+if(linux*|hurd*):!cross_compile:!static:!*-armcc* {
    QMAKE_LFLAGS += -Wl,-e,qt_core_boilerplate
    prog=$$quote(if (/program interpreter: (.*)]/) { print $1; })
    DEFINES += ELF_INTERPRETER=\\\"$$system(readelf -l /bin/ls | perl -n -e \'$$prog\')\\\"