Force global pagemaps into BSS (#364)

Also add a check that the test programs are under about ten megabytes
(they're currently around one on platforms that put inline statics full
of zeroes into BSS and around 270 on ones that don't).

Fixes #339

.github/workflows/main.yml

@@ -66,6 +66,9 @@ jobs:
     - name: Build
       working-directory: ${{github.workspace}}/build
       run: NINJA_STATUS="%p [%f:%s/%t] %o/s, %es" ninja
+    - name: Test file size of binaries is sane
+      working-directory: ${{github.workspace}}/build
+      run: "ls -l func-first_operation-1 ; [ $(ls -l func-first_operation-1 | awk '{ print $5}') -lt 10000000 ]"
       # If the tests are enabled for this job, run them
     - name: Test
       if: ${{ matrix.build-only != 'yes' }}