Fix defect: Incorrect usage of uname on OSX.

src/main/resources/scripts/install.sh

@@ -33,7 +33,7 @@ gvm_bash_profile="${HOME}/.bash_profile"
 gvm_profile="${HOME}/.profile"
 gvm_bashrc="${HOME}/.bashrc"
 gvm_zshrc="${HOME}/.zshrc"
-gvm_platform=$(uname -o)
+gvm_platform=$(uname)
 
 gvm_init_snippet=$( cat << EOF
 #THIS MUST BE AT THE END OF THE FILE FOR GVM TO WORK!!!

src/main/resources/scripts/selfupdate.sh

@@ -36,7 +36,7 @@ case "`uname`" in
         ;;
 esac
 
-gvm_platform=$(uname -o)
+gvm_platform=$(uname)
 gvm_bin_folder="${GVM_DIR}/bin"
 gvm_tmp_zip="${GVM_DIR}/tmp/res-${GVM_VERSION}.zip"
 gvm_stage_folder="${GVM_DIR}/tmp/stage"