tools/tests: small end-to-end test suite for importing/pruning

As bigger changes lie ahead, we want a small end-to-end test suite
that ensures that our importing and tracing does not fall apart. With
this change, we add the infrastructure and two test-cases (fib, qsort)
including ELFs, traces, and injection results.

In order to run the basic-pruner test cases, one needs to setup a
MySQL table and set the CMake option ENABLE_DATABASE_TESTS.

tools/tests/qsort/state/config

@@ -0,0 +1,57 @@
+# configuration file generated by Bochs
+plugin_ctrl: unmapped=1, biosdev=1, speaker=1, extfpuirq=1, gameport=1, pci_ide=0, acpi=0, ioapic=1
+config_interface: textconfig
+display_library: nogui
+memory: host=16, guest=16
+romimage: file="BIOS-bochs-latest"
+vgaromimage: file="vgabios.bin"
+boot: cdrom
+floppy_bootsig_check: disabled=0
+# no floppya
+# no floppyb
+ata0: enabled=1, ioaddr1=0x1f0, ioaddr2=0x3f0, irq=14
+ata0-slave: type=cdrom, path="img/micro/qsort/system.iso", status=inserted, biosdetect=auto, model="Generic 1234"
+ata1: enabled=0
+ata2: enabled=0
+ata3: enabled=0
+parport1: enabled=0
+parport2: enabled=0
+com1: enabled=1, mode=null, dev=""
+com2: enabled=0
+com3: enabled=0
+com4: enabled=0
+usb_uhci: enabled=0
+usb_ohci: enabled=0
+i440fxsupport: enabled=0
+vga_update_interval: 300000
+vga: extension=vbe
+cpu: count=1, ips=5000000, reset_on_triple_fault=1, ignore_bad_msrs=1, msrs="msrs.def"
+cpuid: cpuid_limit_winnt=0, mmx=1, sse=sse4_2, xapic=1, sep=1, aes=1, xsave=1, movbe=1, 1g_pages=0, pcid=0 fsgsbase=0, mwait=1, mwait_is_nop=0
+cpuid: stepping=3, vendor_string="GenuineIntel", brand_string="              Intel(R) Pentium(R) 4 CPU        "
+print_timestamps: enabled=0
+# no gdb stub
+port_e9_hack: enabled=0
+text_snapshot_check: enabled=0
+private_colormap: enabled=0
+clock: sync=none, time0=946681200
+# no cmosimage
+ne2k: card=0, enabled=0
+ne2k: card=1, enabled=0
+ne2k: card=2, enabled=0
+ne2k: card=3, enabled=0
+pnic: enabled=0
+sb16: enabled=0
+# no loader
+log: -
+logprefix: %t%e%d
+panic: action=report
+error: action=report
+info: action=ignore
+debug: action=ignore
+pass: action=ignore
+keyboard_type: mf
+keyboard_serial_delay: 250
+keyboard_paste_delay: 100000
+keyboard_mapping: enabled=0, map=
+user_shortcut: keys=none
+mouse: enabled=0, type=ps2, toggle=ctrl+mbutton