Recompile PyInstaller Linux bootloader with no-pie

See pyinstaller/pyinstaller#5330
and pyinstaller/pyinstaller#5361

Makefile

@@ -167,35 +167,35 @@ install:
 
 pyinstaller:
 	if [ ! -d dist/Tahoe-LAFS ] ; then make frozen-tahoe ; fi
+	python3 -m virtualenv --clear .tox/pyinstaller && \
+	source .tox/pyinstaller/bin/activate && \
+	pip install -r requirements/gridsync.txt && \
+	pip install -r requirements/pyinstaller.txt && \
+	pip install -e . && \
+	rm -rf build/pyinstaller ; \
+	git clone https://github.com/pyinstaller/pyinstaller.git build/pyinstaller && \
+	pushd build/pyinstaller && \
+	git checkout 0c3112a1d3e541c017dc860de825e12b2f5d13c0 && \
+	pushd bootloader && \
 	case `uname` in \
 		Darwin) \
-			python3 -m virtualenv --clear --python=python3.7 .tox/pyinstaller && \
-			source .tox/pyinstaller/bin/activate && \
-			pip install -r requirements/gridsync.txt && \
-			pip install -r requirements/pyinstaller.txt && \
-			pip install -e . && \
-			rm -rf build/pyinstaller ; \
-			git clone https://github.com/pyinstaller/pyinstaller.git build/pyinstaller && \
-			pushd build/pyinstaller && \
-			git checkout v4.1 && \
-			pushd bootloader && \
 			export MACOSX_DEPLOYMENT_TARGET=10.13 && \
 			export CFLAGS=-mmacosx-version-min=10.13 && \
 			export CPPFLAGS=-mmacosx-version-min=10.13 && \
 			export LDFLAGS=-mmacosx-version-min=10.13 && \
-			export LINKFLAGS=-mmacosx-version-min=10.13 && \
-			python ./waf all && \
-			popd && \
-			pip install . && \
-			popd && \
-			pip list && \
-			export PYTHONHASHSEED=1 && \
-			pyinstaller -y misc/gridsync.spec \
+			export LINKFLAGS=-mmacosx-version-min=10.13 \
 		;; \
 		*) \
-			python3 -m tox -e pyinstaller \
+			export CC="gcc -no-pie" \
 		;; \
-	esac
+		esac && \
+	python ./waf all && \
+	popd && \
+	pip install . && \
+	popd && \
+	pip list && \
+	export PYTHONHASHSEED=1 && \
+	pyinstaller -y misc/gridsync.spec
 
 dmg:
 	python3 -m virtualenv --clear build/venv-dmg

tox.ini

@@ -31,7 +31,6 @@ deps =
 setenv =
     PYTHONHASHSEED=1
 commands =
-    pip install git+https://github.com/pyinstaller/pyinstaller@0c3112a1d3e541c017dc860de825e12b2f5d13c0
     pip list
     pyinstaller -y misc/gridsync.spec