[PyQt] Patch to make the built .so files reproducible

[Dmitry Shachnev]

Hi Phil!

Please consider applying the attached patch for sip to make the built
extension modules reproducible.

Without this patch, the files are linked in random order. Below is an example
(formatted for readability):

Build 1:

x86_64-linux-gnu-gcc -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-z,relro -g -fwrapv -O2 -Wl,-z,relro \
    build/temp.linux-amd64-3.8/code_generator/lexer.o \
    build/temp.linux-amd64-3.8/code_generator/export.o \
    build/temp.linux-amd64-3.8/code_generator/heap.o \
    build/temp.linux-amd64-3.8/code_generator/transform.o \
    build/temp.linux-amd64-3.8/code_generator/pybinding.o \
    build/temp.linux-amd64-3.8/code_generator/extracts.o \
    build/temp.linux-amd64-3.8/code_generator/gencode.o \
    build/temp.linux-amd64-3.8/code_generator/parser.o \
    build/temp.linux-amd64-3.8/code_generator/type_hints.o \
    -o .pybuild/cpython3_3.8_sipbuild/build/sipbuild/code_generator.cpython-38-x86_64-linux-gnu.so

Build 2:

x86_64-linux-gnu-gcc -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-z,relro -g -fwrapv -O2 -Wl,-z,relro \
    build/temp.linux-amd64-3.8/code_generator/parser.o \
    build/temp.linux-amd64-3.8/code_generator/export.o \
    build/temp.linux-amd64-3.8/code_generator/pybinding.o \
    build/temp.linux-amd64-3.8/code_generator/extracts.o \
    build/temp.linux-amd64-3.8/code_generator/gencode.o \
    build/temp.linux-amd64-3.8/code_generator/transform.o \
    build/temp.linux-amd64-3.8/code_generator/type_hints.o \
    build/temp.linux-amd64-3.8/code_generator/heap.o \
    build/temp.linux-amd64-3.8/code_generator/lexer.o \
    -o .pybuild/cpython3_3.8_sipbuild/build/sipbuild/code_generator.cpython-38-x86_64-linux-gnu.so

After applying this patch, the build becomes reproducible in our CI system.

It applies to both sipbuild and the runtime module.

--
Dmitry Shachnev
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