Update to modern project structure

Also, move progress tool into tests.

premake.make

@@ -1,8 +1,36 @@
-LDLIBS := -lscerror -lm
+# Define linker flags here, like: -lsqlite3 -lpthread
+LDLIBS :=  -lscerror -lm
 
+# Dir name becomes product name.
+PROJ := $(shell basename $$(pwd))
+
+# Find out what platform we're on, e.g. Darwin, Linux, OpenBSD.
+UNAME_S := $(shell uname -s)
+
+# We will build a library, not a tool.
+PRODUCT := lib
+
+# Single source of truth for version.
 MAJOR := 1
 MINOR := 3
 PATCH := 0
 
+# Specify desired C++ standard for this project.
+CXXFLAGS += -std=c++17
+
+# Set to 1 if you want a precompiled header for the C++ Standard Library.
+PRECOMPILE := 0
+
+# Set to 0 if you want to create a library header by hand.
+# By default, it will concatenate all headers, leaving out
+# lines containing: @exclude
 GENERATELIBHEADER := 1
 
+# List of extra files to be installed in DATADIR (/usr/local/share/$(PROJ) by default)
+DATAFILES :=
+
+# Define plugin sub-projects here. Assumption here is a directory "plugins"
+# containing plugin sub-projects, each in its own directory.
+# Rename and/or repeat accordingly.
+PLUGINS := $(wildcard plugins/*)
+MAKE += --no-print-directory