component/qjs-wrapper, software/js-drone: build with -fPIC.

to avoid the following error:
relocation R_X86_64_32S against `.rodata' can not be used when making a shared object; recompile with -fPIC

component/qjs-wrapper/buildout.cfg

@@ -19,4 +19,4 @@ path = ${qjs-wrapper-source:location}
 autopilot-wrapper =
 environment =
   C_INCLUDE_PATH=include:${open62541:location}/include:${open62541:location}/deps:${open62541:location}/src/pubsub:${quickjs:location}/include
-  LDFLAGS=-L${open62541:location}/lib -Wl,-rpath=${open62541:location}/lib -L${:autopilot-wrapper}/lib -Wl,-rpath=${:autopilot-wrapper}/lib
+  LDFLAGS=-L${open62541:location}/lib -Wl,-rpath=${open62541:location}/lib -L${:autopilot-wrapper}/lib -Wl,-rpath=${:autopilot-wrapper}/lib -fPIC

software/js-drone/software-c-astral.cfg

@@ -21,7 +21,7 @@ url = https://lab.nexedi.com/nexedi/c-astral-wrapper/-/archive/v2.1/c-astral-wra
 md5sum = cca66724e1b7a61c1b9559fde95c420b
 environment =
   CPLUS_INCLUDE_PATH=${qjs-wrapper-source:location}/include:${mavsdk:location}/include:${mavsdk:location}/include/mavsdk
-  LDFLAGS=-L${mavsdk:location}/lib -Wl,-rpath=${mavsdk:location}/lib
+  LDFLAGS=-L${mavsdk:location}/lib -Wl,-rpath=${mavsdk:location}/lib -fPIC
 
 [qjs-wrapper]
 autopilot-wrapper = ${c-astral-wrapper:location}