Fix test-{cmake,pkgconfig}.sh to create, not append, to test files. (#…

…919)

The test.cpp file and the CMakeLists.txt/Makefile were created with
the '>>' append in shell instead of '>'. Which means these files were
growing on multiple invocations if *-consumer was not deleted
between calls (which means that the test would fail the second time
around).

While at it, add the manifold/parallel.h include also to the
pkg-config test.

Make all includes 'system-header' style with angle brackets, as this
is what users of the library would use.

test-cmake.sh

@@ -2,17 +2,17 @@
 mkdir cmake-consumer
 cd cmake-consumer
 
-cat <<EOT >> CMakeLists.txt
+cat <<EOT > CMakeLists.txt
 cmake_minimum_required(VERSION 3.18)
 project(testing LANGUAGES CXX)
 find_package(manifold "2.5.1" REQUIRED)
 add_executable(testing test.cpp)
 target_link_libraries(testing PRIVATE manifold)
 EOT
 
-cat <<EOT >> test.cpp
-#include "manifold/manifold.h"
-#include "manifold/parallel.h"
+cat <<EOT > test.cpp
+#include <manifold/manifold.h>
+#include <manifold/parallel.h>
 int main() { manifold::Manifold foo; return 0; }
 EOT
 

test-pkgconfig.sh

@@ -2,15 +2,16 @@
 mkdir make-consumer
 cd make-consumer
 
-cat <<'EOT' >> Makefile
+cat <<'EOT' > Makefile
 CXXFLAGS=$(shell pkg-config --cflags manifold)
 LDFLAGS=$(shell pkg-config --libs manifold)
 
 testing : testing.cpp
 EOT
 
-cat <<EOT >> testing.cpp
+cat <<EOT > testing.cpp
 #include <manifold/manifold.h>
+#include <manifold/parallel.h>
 int main() { manifold::Manifold foo; return 0; }
 EOT